Oil burner



3 Sheets-Sheet 1 S. PERRY OIL BURNER IIIIIII Filed Feb. 16. 1931 ,D a l 37% S. PERRY OIL BURNER Aug. 28, 1934.

Filed Feb. 16. 1931 i5 Sheets-Sheet 5 Patented Aug. 28, 1934 UNirl-:o STATES PATENT OFFICE OIL BURNER Stanley Perry, Chicago, Ill., assigner to Automatic Burner Corporation, Chicago, Ill., a corporation of Illinois Application February16, 1931, Serial No. 516,186 11 Claims. (Cl. 158-77) My invention relates `more particularly to oil burners of the type comprising a hollow atomizer, as for example of general cup form, to which the oil to be consumed is supplied and along the upwardly extending side wall of which the oil flows upwardly discharging from the upper edge of the wall, and becoming atomized by the ow of air `into contact with the oil.

One of my objects is to provide a construction of oil burner inv which by the use of a slow speed motor, the desired combustible mixture may be produced.

Another object is to provide for the supplying of air at high velocity along the outside of the atomizer for atomizing, and mixing with, the oil. Another object is to provide for the effective shielding of the atomizer from the heat generated by the burner; and other objects as will be manifest from the following description.

Referring to the accompanying drawings: Figure 1 is a view in elevation of a furnace equipped with an oil burner constructed in accordance with my invention, certain parts of the structure being represented in sectional elevation.

Figure 2 is a broken view in sectional elevation of the burner structure.

Figure 3 is a section taken at the line 3-3 on Fig. 2 and viewed in the direction of the arrows. Figure 4 is a section taken at the irregular line 4-4 on Fig. 2 and viewed in the direction of the arrows; and f Figure 5, an enlarged section taken at the line 5-5 on Fig. 4 and Viewed in the direction of the arrows.

Referring to the particular construction shown, 6 represents a furnace having a combustion chamber '7 the bottom of which is formed of a plate 8 having a covering 9 of refractory material, the bottom plate 8 being provided with an aperture 10 in which a neck-ring 11 having an outwardly extending flange 12, is confined.

The flange 12 of the neck ring is provided about its periphery with depending bosses 13 containing downwardly opening sockets into which the upperends of pipes 14 are secured; the lower ends of the pipes 14 extending into openings in a base plate 15. Extending upwardly into the pipes 14 are rods 16 supported on the floor and slidable in the pipes 14, these several parts being held in vertically adjusted position by set-screws 17 on the plate l5 which extend through the pipes 14 and bear at their inner ends against the rods 16.

The construction shown also comprises a vertically disposed electric motor 18 the armature the plate 23.

shaft 19 of .which extends upwardly centrally through the opening in the neck ring .10 and is provided at its upper end, in a plane above the neck ring, with a cup member 20 provided with a large central opening 21 in its bottom which is 60 upwardly deflected as shown to provide an annular trough 22, and a deector plate 23 extending above the cup member 20 and provided with a set of vanes 24'depending intov the cup member.

The deflector plate 23 is secured to the upper 65 end of the shaft 19 by a nut 25 clamping the plate l 23 between it andthe annular flange 26 of a sleeve surrounding the shaft 19 and bearing at its lower end against a stop 27 on the latter, with a ring 28 interposed between the flange 26 and 70 'lhe ring 28 is provided with radial ngers 29 which extend between certain of the vanes 24 and are provided with depending extensions 30 secured to the inner side of the cup member 20 for supporting the latter on the shaft 75 19 whereby the cup member 20 and the de'ector plate 23 rotate with this shaft.

The cup member 20 is preferably of the form shown, having a lower side wall portion 31 preferably slightly flaring upwardly, an interxne- 30 diate portion 32 which a'res upwardly to a much greater degree than the portion 31 and an upper portion 33 which preferably slightly flares upwardly. The vanes 24 at their youter edges conform in shape generally to the Wall portions 32 and 33 from which they are spaced a slight distance as shown," the vanes 2li-thus extending over the side-wall portion 32. The deector 23 preferably is of the form shown to provide an upwardly and outwardly inclined marginal edge portion 34 which extends above the upperl portion of the cup member 20 in vertically spaced relation thereto.

The arrangement of the parts of Athe assemblyjust described is such that oil fed to the interior of the cup member 20, as through a pipe 35 supplied with oil as by means hereinafter described, rises upwardly along the inner surface of the annular side wall of the member 20 and. discharges laterally outwardly throughout the v100 periphery of the cup member through the space between the cup member and the marginaledge of the air-deflector-plate 23, during the rotation of the armature shaft 19, the fan device comprising the vanes 24 operating to force air upwardly 105 for discharge through the space between the cupmember 20 and the deflector plate 23 for atomizing the oil delivered by the cup member as stated.

The motor 18 is shown as ,supported on a hol- 110 'member 20 comprises a pipe low member 36 coaxial with-the opening through the neck ring` 10, the upper extremity-of the member 36, which is provided with a central fopening 37 through which the armature shaft 19 projects, preferably extending a slight-distance above the lower edge of the neck ring as shown. The -member 36 is provided at intervals around its upper edge with upwardly extending bars 38, one only of which is shown, each provided with an outwardly projecting stud 39 adapted to seat in slots 40 of bayonet joint form provided in the inner peripheral surface of the neck ring 10.

The member 36 is rigidly held to the neck ring 10 as by means of set screws 4l carried by the member 36 and screwing against the underside of the neck ring beyond, and adjacent to, a depending annular bead 42 on the neck ber 36 being thus clamped by the studs the screws 41 to the neck ring.

The means shown for supplying oil to the cup ring, the mem- 39 and controlling means 44 commonly used in burner structures and leading from any suitable source of.oil supply under moderate pressure or gravity head to the lower vend of a passage 45 in a boss portion 46 of the member 36, the upper end of the passage 45 communicating with the pipe 35.

The construction also comprises an air-directing member in the form of a ring 47 which is concentric with" and surrounds the cup member periphery, as shown, to provide the annular space 48 between these parts, the member 47 extend- 20'. The ring 47 is provided with an outwardly extending annular flange 49 adjacent its lower edge, this flange being provided at intervals about its circumference with depending lugs 50 at which the ringl 47 is supported on the upper ends of the bars 38, as by screws 51.

` Surrounding the ring flange 49 and against an upper annular ange,

52 on the ring 47, is a ring 53 provided about its neck ring inected with the studs 39, Vlocated below the air passage over whichthe annular space between this cup .dellector plate 23.

l periphery with a series of radially disposed vanes 54 which incline slightly downwardly. The outer marginal edge of the flange 49 is located above the plane of the top of the neck ring 10 and slightly inwardly of this top edge, and the vanes 54 thus project across the space betwen the flange 49 and the neck ring 10, as shown.

It may be here stated that in-accordance with the particular construction vshown provision is made not only-for the passage of air upwardly through the cup member 20 and out through the member and also through the which the the air deflector plate 23, but space 48 and throughthe space4 over vanes 54 extend, air being supplied to the burner through the `opening 37 in the member 36, and also, and preferably controllably, through `the space 55 between the neck ring 10 and the upper portion of the member 36.

either a fixed or adjustable pitch, this fanrbeing fixed on the `armatureshaft 19 preferably at the point shown in the drawings, namely, within` the loand preferably within airing 57 conthe fan 56 thusbeing passage 48 and the air vanes 54 extend, the air member 20 and the passage between the cup The fan 56, in the particular construction 43 having oil-flow.,

therefrom throughout its 47 and resting upon the driven fan devices.

. example those shown, operates not only to force air upwardly through the opening' in the bottom of the cup member 20, but also to vforce air outwardly through the passage 48 and' the passage over which the vanes 54 extend.

The construction shown also comprises a set of vanes 58 which extend generally radially of the longitudinal axis of the cup member 2o. The vanes' 58 which are secured to the cup member 20 extend from points substantially coincident with the lower edge of the member 20 to points substantially coincident with the lower extremity lof the side wall portion 33 of the member 20,

these vanes at their inner edges and their upwardly inclined edges fitting against the exterior surfaces ofthe wall portions 31 and 32,respec tively, of the member20, and extending at.their outer edges closely adjacent to 'the inner surface of the ring 47.v While the vanes 58, to perform their function, may extend radially of the longi-y tudinal axis of the cup member 20, itis preferred that they be set at. a slight angle, as for example 10 to the radial plane to extend into a position in which these blades present a lead `of about 10 as represented `in Fig. 4, assuming that the cup member 2O is rotated in clockwise direction in this figure. By so disposing the vanes 58 the air displacing y action produced thereby is augmented as compared with the positioning of these -vanes radially.

The fan formed of the vanes 24 operates to force air through the cup member 20 'and out through the space between the upper marginal edge of the latterpandthe edge of the plate 23, the air forcing effect of this fan being augmented by the yauxiliary fan 56, which also operates as above stated, to force air through the passage 48 and through the passage over1 which the vanes 54 extend whereby the driving of the fan formed of the vanes 24 at high speed is not necessary.

The vanes 58 are desirable inasmuch as they operate, particularly in a construction such as that shown presenting arelatively constricted passage between the upper edge of the ring 47 and the cup member 20, to supply air from the outside of the cup member 20 tol the oil and air discharging through the space between the upper. edge of the cup member 20 andv the' deilector plate 23, at a higher velocity than is possible by employing the fan 56 only for forcing' air through the space between the cup member 20 and the ring 47, the vanes 5B thus contributing to the functioning of the burnerin a highly satisfactory manner without requiring the use of rapidly The feature of the ring 47 extending to the elevation referred to is vof advantage inasmuch as it serves very effectually as a shield protecting the burner parts which it surrounds, from ,the intense heat produced by the burner.

for igniting the fuel issuing from the burner may be provided, asfor shown which comprise a pilot burner structure 59 eontrollably suppliedl with gas as through a pipe 60 leading from any suitable source of supply. l Inasmuch as in the construction shown, wherein the ring 57 is spacedfrom the rig l0, there may be a possibility, under some conditions, of the gases in the combustion chamber Any suitable means being drawn by the fan 56 downwardly through rings l0 and 57,-1 provide the space between the this space, these means for substantially closing means shown in the construction illustratedcomprising an outwardly flaring skirt 57a on the bottom of the ring 57.

While I have illustrated and described a particular construction embodying my invention, I d o not lwish to be understood as intending to 11mit it thereto as the same may be variously moded and'altered without departing from the spirit of my invention.

WhatI claim as new, Letters Patent, is:

l. In a rotary type oil burner, an' atomizing cup adapted to atomize oil, a motor adapted to rotate said cup having a shaft connected to said cup, a fan. on the motor shaft between the motor and the atomizing cup adapted to supply air to the atomized oil to promote combustionfa circular ring member surrunding the fan which has arms which are secured to themotor, a second -circular ring member surrounding the atomizing cup and secured to the rst mentioned ring member, an air diffusing plate 'supported'by the second ring member.

r2. In an oil-burner, the combination of an annular rotary atomizer to `which the oil is supplied and having an outwardly and upwardly ex'- tendng side wall, the upper end of which forms the discharge portion of the atomizer, means for and desire to secure by .rotating said atomizer, a series of spaced air forcing blades -on the exterior of said wall of the atomizer, a portion of said wall closing the spaces at the tops of said blades, the wall of the atomizer rising above the closed* upper ends of said spaces, and a ring surrounding said atomizer in spaced relation thereto, with an edge of the ring adjacent the discharge lend `of the atomizer, said` blades being so proportioned and arranged thatv the air is forced by said blades Iupwardly lengthwise of said blades through the space between said ring and atomizer to the discharge portion of said atomizer exteriorly of the latter.

3. In an oil-burner, the combination of a rotary cup-shaped atomizer to the interior of which the oil is supplied and having an outer upwardly extending side wall, the upper end of which forms the discharge portion of the atomizer, said side wall of said atomizer comprising an upper portion, a lower portion and an intermediate portion, said intermediate portion sloping upwardly and outwardly at an abrupt angle to the lower portion, a series of spaced air forcing blades on the exterior of said side wall of the atomizer, a portion of said side wall closing the spaces between the blades at their upper ends, said blades being of greater length than width and substantially straight and disposed substantially parallel with the axis about which said atomizer rotates and operating to force air upwardly lengthwise of said blades to the discharge portion of said atomizer exteriorly of the latter, and a ring surrounding said blades, said intermediate portion and a part of said upper portion and in'4 spaced relation thereto, with an edge of the ring adjacent th f discharge end of the atomizer, whereby the 'y air discharged by said blades passes through the space between said ring and atomizer.

4. Oil combustion apparatus comprising a combustion chamber having an opening in its bottom and an oil burner in said opening and comprising a motor, an atomizer open forthe passage of air therethrough and driven by said motor and to which the oil is supplied, a fan for forcing air through said atomizer, said atomizer being mounted in said opening andspaced from the wall defining said opening, a ring in said opening and surrounding said fan and spaced from the wall of said opening, vand means substantially closing the space between said ring and the wall dening the opening, to prevent downward flow through said space, and into the bottom of said ing, of gaseous fluid in said combustion cham- 5. Oil combustion apparatus comprising a combustion chamber having an opening in its bot- `tom and an oil burner in said opening and comdownward flow through said space, and into the bottom of said ring, of gaseous fluid in said combustion chamber.

6. In an oil burner, the combination of a hollow rotary atomizer the upperedge of which is the delivery portion, means to supply oil to said atomizer, a deflector above said atomizer for directing air owing through said atomizer outwardly in a lateral direction, a fan below said .atomizer and rotatable therewith, means surrounding the fan and means surrounding the atomizer for confining air iiow about and throughsaid atomizer in an upward direction to said delivery portion, and fan blades on the exterior of said atomizer for forcing air to the delivery portion of said atomizer.

'7. In an oil burner,the combination of a rotary cup shaped atomizer to the interior of which' -the oil is supplied, and having an outer upward-v ly extending side wall the upper end of which forms the discharge portion of the atomizer, the

side wall of said atomizer having an intermedi ate portion sloping outwardly and upwardly at an abrupt yangle to the lower portion, said side wall rising above said intermediate portion, means for rotating said atomizer, a se'ries of spaced-air forcing blades on theexterior of said side wall of the atomizer a portion of said wall closing the spaces between the blades at their upper ends, and a ring surrounding said atomizer in spaced relation thereto, with an edge of the ring adjacent the discharge end of the atomizer,

said blades being so proportioned and arranged that the air is forced by said blades upwardly lengthwise of said blades through the spacebetween said ring and atomizer to the discharge portion 'of said atomizer exteriorly of the latter.

8. In an oil burner, the combination oi a motor, a hollow rotary atomi'zer open 'for the passage of air therethrough and driven by said motor and rotatable about a. substantially vertical axis and to which the oil is supplied and comprising an` air forcing element causing the air to flow through said atomizer, a deector above said element and forming with the 'upper edge of said atomizer a laterally opening space through which the oil and the air operated on by said element, flow, fan blades on the exterior of said atomizer delivering air to the oil discharging froxns'aid atomizer, means surrounding the fan blades for coniining :the air for upward flow about` said atomizer to a point adjacent said space, and a fan operating to supplement said air forcing element and said fan blades for forcing the air upwardlythrough flow rotary atomizer the upper edge of which is the deliveryportion, a deector. above said atomizer for directing air owing through said atomizer outwardly in a lateral direction, a fan for forcing air upwardly through and around the atomizer, stationary means spaced outwardly from and surrounding the atomizer for confining air -ow about the atomizer in an upward direction to said delivery portion, and fan blades on the exterior of said atomzer for forcing air to the delivery portion of said atomizer.

10. In an oil burner, the combination of a-hollow rotary atomizer the upper edge of which is the delivery portion, a deector above said atomizer for directing air flowing through said atomizerv outwardly in a lateral direction, means for forcing air through said atomizer, fan blades on the exterior of said atomizer, and stationary means spaced outwardly from and surrounding said fan blades for confining air flow through said lastnamed means, due to the action of said fan blades, to said delivery portion.

11. In an oil burner wherein the upper part is the discharge portion, the combination ofv a motor, an annular rotary atomizer open for the passage of air -therethrough and driven by said motor and to which the oil is supplied, an air-directing member surrounding said atomizer, a deflector member, said members being spacedfrom each other and said atomizer discharging the oil through the space between the upper end of the atomizer, fan blades mounted in said atomizer, fan blades mounted on the the space between said atomizer and atomizer in the air directing member, and a fan positioned to direct air into and through said atomi'zer and also through the space between said` air-directing member and said atomizer.

STANLEY PERRY.

1,971,874--Stanley Perry, Chicago,

19311. Disclaimer filed' Burner Corporation.

September Ill. OIL librarian,v Patentdated August 28,

7, 1935, by the assignee, Automatic Hereby enters this disclaimer to that part of the claimin said lspecification which i is in the following Words, to Wit,

10. In an oil burner,

through said atomizer, means spaced outwardly from through said last-named means, portion. [Q'Zjcial GazetteOctober 1, 1935.] y

. vthe combination of aedge of which is the delivery portion, a delector above said lowing 'through said atomzer outwardly in a lateral direction,

fan blades on the exterior of and surrounding said fan bladesv for confining air flow due to the action of said fan blades,

claim 10, reading as follows:

hollow rotary atomizer the upper atomzer for directing air means for forcing air said atomizer, and stationary to' said delivery the members and at flow rotary atomizer the upper edge of which is the deliveryportion, a deector. above said atomizer for directing air owing through said atomizer outwardly in a lateral direction, a fan for forcing air upwardly through and around the atomizer, stationary means spaced outwardly from and surrounding the atomizer for confining air -ow about the atomizer in an upward direction to said delivery portion, and fan blades on the exterior of said atomzer for forcing air to the delivery portion of said atomizer.

10. In an oil burner, the combination of a-hollow rotary atomizer the upper edge of which is the delivery portion, a deector above said atomizer for directing air flowing through said atomizerv outwardly in a lateral direction, means for forcing air through said atomizer, fan blades on the exterior of said atomizer, and stationary means spaced outwardly from and surrounding said fan blades for confining air flow through said lastnamed means, due to the action of said fan blades, to said delivery portion.

11. In an oil burner wherein the upper part is the discharge portion, the combination ofv a motor, an annular rotary atomizer open for the passage of air -therethrough and driven by said motor and to which the oil is supplied, an air-directing member surrounding said atomizer, a deflector member, said members being spacedfrom each other and said atomizer discharging the oil through the space between the upper end of the atomizer, fan blades mounted in said atomizer, fan blades mounted on the the space between said atomizer and atomizer in the air directing member, and a fan positioned to direct air into and through said atomi'zer and also through the space between said` air-directing member and said atomizer.

STANLEY PERRY.

1,971,874--Stanley Perry, Chicago,

19311. Disclaimer filed' Burner Corporation.

September Ill. OIL librarian,v Patentdated August 28,

7, 1935, by the assignee, Automatic Hereby enters this disclaimer to that part of the claimin said lspecification which i is in the following Words, to Wit,

10. In an oil burner,

GazetteOctober 1, 1935.] y l vthe combination of aedge of which is the delivery portion, a delector above said lowing 'through said atomzer outwardly in a lateral direction,

fan blades on the exterior of and surrounding said fan bladesv for confining air flow due to the action of said fan blades,

claim 10, reading as follows:

hollow rotary atomizer the upper atomzer for directing air means for forcing air said atomizer, and stationary to' said delivery the members and at 

